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GB2343819A - Static viterbi detector for channels utilizing a code having time varying constraints - Google Patents

Static viterbi detector for channels utilizing a code having time varying constraints

Info

Publication number
GB2343819A
GB2343819A GB0001554A GB0001554A GB2343819A GB 2343819 A GB2343819 A GB 2343819A GB 0001554 A GB0001554 A GB 0001554A GB 0001554 A GB0001554 A GB 0001554A GB 2343819 A GB2343819 A GB 2343819A
Authority
GB
United Kingdom
Prior art keywords
code
time varying
static
viterbi detector
channels utilizing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB0001554A
Other versions
GB0001554D0 (en
GB2343819B (en
Inventor
Bernardo Rub
Hamid R Shafiee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seagate Technology LLC
Original Assignee
Seagate Technology LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seagate Technology LLC filed Critical Seagate Technology LLC
Publication of GB0001554D0 publication Critical patent/GB0001554D0/en
Publication of GB2343819A publication Critical patent/GB2343819A/en
Application granted granted Critical
Publication of GB2343819B publication Critical patent/GB2343819B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H03M13/23—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using convolutional codes, e.g. unit memory codes
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Theoretical Computer Science (AREA)
  • Error Detection And Correction (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

A detector (124) is used in detecting data encoded in a read signal received from a storage channel (100). The detector (124) includes a Viterbi detector (124) having a time-invariant structure configured to detect the data encoded according to a code having time varying constraints.
GB0001554A 1997-08-11 1998-08-10 Static viterbi detector for channels utilizing a code having time varying constraints Expired - Fee Related GB2343819B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US5535197P 1997-08-11 1997-08-11
PCT/US1998/016608 WO1999008376A1 (en) 1997-08-11 1998-08-10 Static viterbi detector for channels utilizing a code having time varying constraints

Publications (3)

Publication Number Publication Date
GB0001554D0 GB0001554D0 (en) 2000-03-15
GB2343819A true GB2343819A (en) 2000-05-17
GB2343819B GB2343819B (en) 2002-09-11

Family

ID=21997265

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0001554A Expired - Fee Related GB2343819B (en) 1997-08-11 1998-08-10 Static viterbi detector for channels utilizing a code having time varying constraints

Country Status (7)

Country Link
US (1) US6212661B1 (en)
JP (1) JP2001512945A (en)
KR (1) KR100543381B1 (en)
CN (1) CN1166052C (en)
DE (1) DE19882604T1 (en)
GB (1) GB2343819B (en)
WO (1) WO1999008376A1 (en)

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GB2346305B (en) * 1997-10-08 2002-11-20 Seagate Technology Method and apparatus for detecting data in magnetic recording using decision feedback

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US6480984B1 (en) * 1999-06-23 2002-11-12 Agere Systems Inc. Rate (M/N) code encoder, detector, and decoder for control data
CN1383617A (en) * 2000-06-27 2002-12-04 西加特技术有限责任公司 Method and apparatus for unbalanced protection coding in magnetic recording channels with concatenated error correction codes
US7058422B2 (en) * 2000-09-20 2006-06-06 Bae Systems Information And Electronic Systems Integration Inc. Method for overusing frequencies to permit simultaneous transmission of signals from two or more users on the same frequency and time slot
US6377635B1 (en) * 2000-10-26 2002-04-23 International Business Machines Corporation Method and apparatus for viterbi detection of generalized partial response signals using partial matched filter and matched filter metrics
US6373906B1 (en) * 2000-10-26 2002-04-16 International Business Machines Corporation Method and apparatus for Viterbi detection of generalized partial response signals including two-way add/compare/select for improved channel speed
US20020172305A1 (en) * 2000-11-24 2002-11-21 Younggyun Kim Fixed decision delay detectors for timing recovery loop
US7415075B2 (en) * 2002-10-29 2008-08-19 Conexant Systems, Inc. Multi-rate encoding and decoding system
GB2395404A (en) * 2002-11-07 2004-05-19 Ttpcomm Ltd Format detection
JPWO2007013361A1 (en) * 2005-07-29 2009-02-05 株式会社進化システム総合研究所 Signal processing apparatus and signal processing method
WO2008150321A1 (en) 2007-05-25 2008-12-11 Rambus Inc. Methods and systems for transmitting auxiliary data by modulating pre-emphasis filter coefficients
US9124299B1 (en) * 2012-04-04 2015-09-01 Sk Hynix Memory Solutions Inc. Fixed-point detector pruning for constrained codes
US9525436B2 (en) * 2014-12-24 2016-12-20 Avago Technologies General Ip (Singapore) Pte. Ltd. Data detector with extended states

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US5390198A (en) * 1993-05-26 1995-02-14 The Boeing Company Soft decision viterbi decoder for M-ary convolutional codes
US5586128A (en) * 1994-11-17 1996-12-17 Ericsson Ge Mobile Communications Inc. System for decoding digital data using a variable decision depth
US5588011A (en) * 1994-08-10 1996-12-24 C. M. Riggle Tuned viterbi detector and equalizer system

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Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5349608A (en) * 1993-03-29 1994-09-20 Stanford Telecommunications, Inc. Viterbi ACS unit with renormalization
US5390198A (en) * 1993-05-26 1995-02-14 The Boeing Company Soft decision viterbi decoder for M-ary convolutional codes
US5588011A (en) * 1994-08-10 1996-12-24 C. M. Riggle Tuned viterbi detector and equalizer system
US5586128A (en) * 1994-11-17 1996-12-17 Ericsson Ge Mobile Communications Inc. System for decoding digital data using a variable decision depth

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2346305B (en) * 1997-10-08 2002-11-20 Seagate Technology Method and apparatus for detecting data in magnetic recording using decision feedback

Also Published As

Publication number Publication date
US6212661B1 (en) 2001-04-03
KR20010022800A (en) 2001-03-26
WO1999008376A9 (en) 1999-05-14
CN1266549A (en) 2000-09-13
JP2001512945A (en) 2001-08-28
WO1999008376A1 (en) 1999-02-18
CN1166052C (en) 2004-09-08
DE19882604T1 (en) 2000-08-10
KR100543381B1 (en) 2006-01-20
GB0001554D0 (en) 2000-03-15
GB2343819B (en) 2002-09-11

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20050810